Remove some dead code.

src/codegen.cc

-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "v8.h"
 
 #include "bootstrapper.h"
-#include "codegen-inl.h"
+#include "codegen.h"
 #include "compiler.h"
 #include "debug.h"
 #include "prettyprinter.h"
-#include "register-allocator-inl.h"
 #include "rewriter.h"
 #include "runtime.h"
 #include "scopeinfo.h"
 #include "stub-cache.h"
-#include "virtual-frame-inl.h"
 
 namespace v8 {
 namespace internal {
 
 #define __ ACCESS_MASM(masm_)
 
 #ifdef DEBUG
 
 Comment::Comment(MacroAssembler* masm, const char* msg)
     : masm_(masm), msg_(msg) {
   __ RecordComment(msg);
 }
 
 
 Comment::~Comment() {
   if (msg_[0] == '[') __ RecordComment("]");
 }
 
 #endif  // DEBUG
 
 #undef __
 
 
-void CodeGenerator::ProcessDeferred() {
-  while (!deferred_.is_empty()) {
-    DeferredCode* code = deferred_.RemoveLast();
-    ASSERT(masm_ == code->masm());
-    // Record position of deferred code stub.
-    masm_->positions_recorder()->RecordStatementPosition(
-        code->statement_position());
-    if (code->position() != RelocInfo::kNoPosition) {
-      masm_->positions_recorder()->RecordPosition(code->position());
-    }
-    // Generate the code.
-    Comment cmnt(masm_, code->comment());
-    masm_->bind(code->entry_label());
-    if (code->AutoSaveAndRestore()) {
-      code->SaveRegisters();
-    }
-    code->Generate();
-    if (code->AutoSaveAndRestore()) {
-      code->RestoreRegisters();
-      code->Exit();
-    }
-  }
-}
-
-
-void DeferredCode::Exit() {
-  masm_->jmp(exit_label());
-}
-
-
-void CodeGenerator::SetFrame(VirtualFrame* new_frame,
-                             RegisterFile* non_frame_registers) {
-  RegisterFile saved_counts;
-  if (has_valid_frame()) {
-    frame_->DetachFromCodeGenerator();
-    // The remaining register reference counts are the non-frame ones.
-    allocator_->SaveTo(&saved_counts);
-  }
-
-  if (new_frame != NULL) {
-    // Restore the non-frame register references that go with the new frame.
-    allocator_->RestoreFrom(non_frame_registers);
-    new_frame->AttachToCodeGenerator();
-  }
-
-  frame_ = new_frame;
-  saved_counts.CopyTo(non_frame_registers);
-}
-
-
-void CodeGenerator::DeleteFrame() {
-  if (has_valid_frame()) {
-    frame_->DetachFromCodeGenerator();
-    frame_ = NULL;
-  }
-}
-
-
 void CodeGenerator::MakeCodePrologue(CompilationInfo* info) {
 #ifdef DEBUG
   bool print_source = false;
   bool print_ast = false;
   bool print_json_ast = false;
   const char* ftype;
 
   if (Isolate::Current()->bootstrapper()->IsActive()) {
     print_source = FLAG_print_builtin_source;
     print_ast = FLAG_print_builtin_ast;
@@ skipping 91 matching lines @@
       }
       PrintF("--- Optimized code ---\n");
     } else {
       PrintF("--- Code ---\n");
     }
     code->Disassemble(*function->debug_name()->ToCString());
   }
 #endif  // ENABLE_DISASSEMBLER
 }
 
-
-// Generate the code.  Compile the AST and assemble all the pieces into a
-// Code object.
-bool CodeGenerator::MakeCode(CompilationInfo* info) {
-  // When using Crankshaft the classic backend should never be used.
-  ASSERT(!V8::UseCrankshaft());
-  Handle<Script> script = info->script();
-  if (!script->IsUndefined() && !script->source()->IsUndefined()) {
-    int len = String::cast(script->source())->length();
-    Counters* counters = info->isolate()->counters();
-    counters->total_old_codegen_source_size()->Increment(len);
-  }
-  if (FLAG_trace_codegen) {
-    PrintF("Classic Compiler - ");
-  }
-  MakeCodePrologue(info);
-  // Generate code.
-  const int kInitialBufferSize = 4 * KB;
-  MacroAssembler masm(info->isolate(), NULL, kInitialBufferSize);
-#ifdef ENABLE_GDB_JIT_INTERFACE
-  masm.positions_recorder()->StartGDBJITLineInfoRecording();
-#endif
-  CodeGenerator cgen(&masm);
-  CodeGeneratorScope scope(Isolate::Current(), &cgen);
-  cgen.Generate(info);
-  if (cgen.HasStackOverflow()) {
-    ASSERT(!Isolate::Current()->has_pending_exception());
-    return false;
-  }
-
-  InLoopFlag in_loop = info->is_in_loop() ? IN_LOOP : NOT_IN_LOOP;
-  Code::Flags flags = Code::ComputeFlags(Code::FUNCTION, in_loop);
-  Handle<Code> code = MakeCodeEpilogue(cgen.masm(), flags, info);
-  // There is no stack check table in code generated by the classic backend.
-  code->SetNoStackCheckTable();
-  CodeGenerator::PrintCode(code, info);
-  info->SetCode(code);  // May be an empty handle.
-#ifdef ENABLE_GDB_JIT_INTERFACE
-  if (FLAG_gdbjit && !code.is_null()) {
-    GDBJITLineInfo* lineinfo =
-        masm.positions_recorder()->DetachGDBJITLineInfo();
-
-    GDBJIT(RegisterDetailedLineInfo(*code, lineinfo));
-  }
-#endif
-  return !code.is_null();
-}
-
-
 #ifdef ENABLE_LOGGING_AND_PROFILING
 
-
 static Vector<const char> kRegexp = CStrVector("regexp");
 
-
 bool CodeGenerator::ShouldGenerateLog(Expression* type) {
   ASSERT(type != NULL);
   if (!LOGGER->is_logging() && !CpuProfiler::is_profiling()) return false;
   Handle<String> name = Handle<String>::cast(type->AsLiteral()->handle());
   if (FLAG_log_regexp) {
     if (name->IsEqualTo(kRegexp))
       return true;
   }
   return false;
 }
 
 #endif
 
 
-void CodeGenerator::ProcessDeclarations(ZoneList<Declaration*>* declarations) {
-  int length = declarations->length();
-  int globals = 0;
-  for (int i = 0; i < length; i++) {
-    Declaration* node = declarations->at(i);
-    Variable* var = node->proxy()->var();
-    Slot* slot = var->AsSlot();
-
-    // If it was not possible to allocate the variable at compile
-    // time, we need to "declare" it at runtime to make sure it
-    // actually exists in the local context.
-    if ((slot != NULL && slot->type() == Slot::LOOKUP) || !var->is_global()) {
-      VisitDeclaration(node);
-    } else {
-      // Count global variables and functions for later processing
-      globals++;
-    }
-  }
-
-  // Return in case of no declared global functions or variables.
-  if (globals == 0) return;
-
-  // Compute array of global variable and function declarations.
-  Handle<FixedArray> array = FACTORY->NewFixedArray(2 * globals, TENURED);
-  for (int j = 0, i = 0; i < length; i++) {
-    Declaration* node = declarations->at(i);
-    Variable* var = node->proxy()->var();
-    Slot* slot = var->AsSlot();
-
-    if ((slot != NULL && slot->type() == Slot::LOOKUP) || !var->is_global()) {
-      // Skip - already processed.
-    } else {
-      array->set(j++, *(var->name()));
-      if (node->fun() == NULL) {
-        if (var->mode() == Variable::CONST) {
-          // In case this is const property use the hole.
-          array->set_the_hole(j++);
-        } else {
-          array->set_undefined(j++);
-        }
-      } else {
-        Handle<SharedFunctionInfo> function =
-            Compiler::BuildFunctionInfo(node->fun(), script());
-        // Check for stack-overflow exception.
-        if (function.is_null()) {
-          SetStackOverflow();
-          return;
-        }
-        array->set(j++, *function);
-      }
-    }
-  }
-
-  // Invoke the platform-dependent code generator to do the actual
-  // declaration the global variables and functions.
-  DeclareGlobals(array);
-}
-
-
-void CodeGenerator::VisitIncrementOperation(IncrementOperation* expr) {
-  UNREACHABLE();
-}
-
-
-// Lookup table for code generators for special runtime calls which are
-// generated inline.
-#define INLINE_FUNCTION_GENERATOR_ADDRESS(Name, argc, ressize)          \
-    &CodeGenerator::Generate##Name,
-
-const CodeGenerator::InlineFunctionGenerator
-    CodeGenerator::kInlineFunctionGenerators[] = {
-        INLINE_FUNCTION_LIST(INLINE_FUNCTION_GENERATOR_ADDRESS)
-        INLINE_RUNTIME_FUNCTION_LIST(INLINE_FUNCTION_GENERATOR_ADDRESS)
-};
-#undef INLINE_FUNCTION_GENERATOR_ADDRESS
-
-
-bool CodeGenerator::CheckForInlineRuntimeCall(CallRuntime* node) {
-  ZoneList<Expression*>* args = node->arguments();
-  Handle<String> name = node->name();
-  const Runtime::Function* function = node->function();
-  if (function != NULL && function->intrinsic_type == Runtime::INLINE) {
-    int lookup_index = static_cast<int>(function->function_id) -
-        static_cast<int>(Runtime::kFirstInlineFunction);
-    ASSERT(lookup_index >= 0);
-    ASSERT(static_cast<size_t>(lookup_index) <
-           ARRAY_SIZE(kInlineFunctionGenerators));
-    InlineFunctionGenerator generator = kInlineFunctionGenerators[lookup_index];
-    (this->*generator)(args);
-    return true;
-  }
-  return false;
-}
-
-
-// Simple condition analysis.  ALWAYS_TRUE and ALWAYS_FALSE represent a
-// known result for the test expression, with no side effects.
-CodeGenerator::ConditionAnalysis CodeGenerator::AnalyzeCondition(
-    Expression* cond) {
-  if (cond == NULL) return ALWAYS_TRUE;
-
-  Literal* lit = cond->AsLiteral();
-  if (lit == NULL) return DONT_KNOW;
-
-  if (lit->IsTrue()) {
-    return ALWAYS_TRUE;
-  } else if (lit->IsFalse()) {
-    return ALWAYS_FALSE;
-  }
-
-  return DONT_KNOW;
-}
-
-
 bool CodeGenerator::RecordPositions(MacroAssembler* masm,
                                     int pos,
                                     bool right_here) {
   if (pos != RelocInfo::kNoPosition) {
     masm->positions_recorder()->RecordStatementPosition(pos);
     masm->positions_recorder()->RecordPosition(pos);
     if (right_here) {
       return masm->positions_recorder()->WriteRecordedPositions();
     }
   }
   return false;
 }
 
 
-void CodeGenerator::CodeForFunctionPosition(FunctionLiteral* fun) {
-  if (FLAG_debug_info) RecordPositions(masm(), fun->start_position(), false);
-}
-
-
-void CodeGenerator::CodeForReturnPosition(FunctionLiteral* fun) {
-  if (FLAG_debug_info) RecordPositions(masm(), fun->end_position() - 1, false);
-}
-
-
-void CodeGenerator::CodeForStatementPosition(Statement* stmt) {
-  if (FLAG_debug_info) RecordPositions(masm(), stmt->statement_pos(), false);
-}
-
-
-void CodeGenerator::CodeForDoWhileConditionPosition(DoWhileStatement* stmt) {
-  if (FLAG_debug_info)
-    RecordPositions(masm(), stmt->condition_position(), false);
-}
-
-
-void CodeGenerator::CodeForSourcePosition(int pos) {
-  if (FLAG_debug_info && pos != RelocInfo::kNoPosition) {
-    masm()->positions_recorder()->RecordPosition(pos);
-  }
-}
-
-
 const char* GenericUnaryOpStub::GetName() {
   switch (op_) {
     case Token::SUB:
       if (negative_zero_ == kStrictNegativeZero) {
         return overwrite_ == UNARY_OVERWRITE
             ? "GenericUnaryOpStub_SUB_Overwrite_Strict0"
             : "GenericUnaryOpStub_SUB_Alloc_Strict0";
       } else {
         return overwrite_ == UNARY_OVERWRITE
             ? "GenericUnaryOpStub_SUB_Overwrite_Ignore0"
@@ skipping 28 matching lines @@
   int result = save_doubles_ ? 1 : 0;
 #ifdef _WIN64
   return result | ((result_size_ == 1) ? 0 : 2);
 #else
   return result;
 #endif
 }
 
 
 } }  // namespace v8::internal